Camera Optical Lens

ABSTRACT

The present disclosure relates to optical lens, comprising from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; the camera optical lens satisfies following conditions: 1.00≤f1/f≤1.50; 1.70≤n4≤2.20; −2.00≤f3/f4≤2.00; 0.50≤(R13+R14)/(R13−R14)≤10.00; and 1.70≤n7≤2.20; where, f denotes a focus length of the camera optical lens; f1, f3 and f4 denote focus lengths of the first lens, the third lens and the fourth length respectively; n4 denotes a refractive index of the fourth lens; n7 denotes a refractive index of the seventh lens; R13 and R14 denote curvature radiuses of an object side surface and an image side surface of the seventh lens, respectively.

TECHNICAL FIELD

The present disclosure generally relates to optical lens, in particular to a camera optical lens suitable for handheld terminals, such as smart phones and digital cameras, and imaging devices, such as monitors or PC lens.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but in general the photosensitive devices of camera lens are nothing more than Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera lens with good imaging quality therefore have become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. Also, with the development of technology and the increase of the diverse demands of users, and as the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens designs. There is an urgent need for ultra-thin wide-angle camera lenses which with good optical characteristics and fully corrected chromatic aberration.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram illustrating a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating a lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram illustrating a field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram illustrating a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram illustrating a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram illustrating a field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram illustrating a camera optical lens in accordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram illustrating a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram illustrating a lateral color of the camera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram illustrating a field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the present disclosure clearer, the embodiments of the present disclosure are described in detail with reference to the accompanying drawings as follows. A person of ordinary skill in the related art would understand that, in the embodiments of the present disclosure, many technical details are provided to make readers better understand this application. However, the technical solutions sought to be protected by this application could be implemented, even without these technical details and any changes and modifications based on the following embodiments.

Embodiment 1

As shown in the accompanying drawings, the present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of Embodiment 1 of the present disclosure, the camera optical lens 10 comprises seventh lenses. Specifically, the camera optical lens 10 comprises in sequence from an object side to an image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. An optical element like an optical filter GF may be arranged between the seventh lens L7 and an image surface Si.

The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of glass material, the fifth lens L5 is made of plastic material, the sixth lens L6 is made of plastic material and the seventh lens L7 is made of glass material.

Herein, a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis defined as TTL, a focal length of the whole camera optical lens 10 is defined as f, and a focal length of the first lens defined as f1. The camera optical lens 10 satisfies the following condition: 1.00≤f1/f≤1.50, which specifies the positive refractive power of the first lens. If the specified lower limit value is exceeded, a very strong positive refractive power of the first lens L1 is obtained, which, though is advantageous for the lens to be thin, would make it difficult to correct aberrations and the like, and it is not good for the lens to be developed towards a wide angle as well. On the contrary, if the specified upper limit value is exceeded, the positive refractive power of the first lens would become too weak, and it is difficult for the lens to be developed toward ultra-thinning. Preferably, the camera optical lens 10 further satisfies the following condition: 1.05≤f1/f≤1.49.

A refractive index of the fourth lens L4 is defined as n4. The camera optical lens 10 satisfies the following condition: 1.70≤n4≤2.20, which specifies the refractive index of the fourth lens L4. If the refractive index is within the above range, correction of an aberration of the system is faciliated while facilitating a development towards ultra-thin. Preferably, the camera optical lens 10 further satisfies the following condition: 1.71≤n4≤2.12.

A focal length of the third lens L3 is defined as f3, a focal length of the fourth lens L4 is defined as f4, and the camera optical lens 10 further satisfies the following condition: −2.00≤f3/f4≤2.00, which specify the ratio of the focal length f3 of the third lens L3 and the focal length f4 of the fourth lens L4. In this way, the sensitivity of the optical lens group for imaging is effectively reduced, and the quality for imaging is further improved. Preferably, the camera optical lens 10 further satisfies the following condition: −1.99≤f3/f4≤0.55.

A curvature radius of an object side surface of the seventh lens L7 is defined as R13, a curvature radius of an image side surface of the seventh lens L7 is defined as R14. The camera optical lens 10 further satisfies the following condition: 0.50≤(R13+R14)/(R13−R14)≤10.00, which specify the shape of the seventh lens L7. When the value is with this range, a development towards ultra-thin and wide-angle lenses would facilitate solving problems, like correcting aberration of the off-axis picture angle. Preferably, the camera optical lens 10 further satisfies the following condition: 1.80≤(R13+R14)/(R13−R14)≤9.50.

A refractive index of the seventh lens L7 is defined as n7. The camera optical lens 10 further satisfies the following condition: 1.70≤n7≤2.20, which specifies the refractive index of the seventh lens L7. It is beneficial to develop towards ultra-thin while facilitating correction of aberration, if the refractive index is within the above range. Preferably, the camera optical lens 10 further satisfies the following condition: 1.71≤n7≤2.12.

When the focal length f of the camera optical lens 10 of the present disclosure, the focus length f1 of the first lens L1, the focus length f3 of the third lens L3, the focus length f4 of the fourth lens L4, the refractive index n4 of the fourth lens L4, the refractive index n7 of the seventh lens L7, the curvature radius R13 of the object side surface of the seventh lens L7 and the curvature radius R14 of the image side surface of the seventh lens L7 satisfy the above conditions, the camera optical lens 10 has a high performance and satisfies a design requirement of low TTL.

In this embodiment, an object side surface of the first lens L1 is convex in a paraxial region and an image side surface of the first lens L1 is concave in the paraxial region, and the first lens L1 has a positive refractive power.

A curvature radius of the object side surface of the first lens L1 is defined as R1, a curvature radius of the image side surface of the first lens L1 is defined as R2, and the camera optical lens 10 further satisfies the following condition: −6.13≤(R1+R2)/(R1−R2)≤−1.43, thus the shape of the first lens is reasonably controlled, so that the first lens may effectively correct system spherical aberration. Preferably, the camera optical lens 10 further satisfies the following condition: −3.83≤(R1+R2)/(R1−R2)≤−1.78.

An on-axis thickness of the first lens L1 is defined as d1, a total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.07≤d1/TTL≤0.24, thus the shape of the first lens is reasonably controlled, which is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.11≤d1/TTL≤0.19.

In this embodiment, an object side surface of the second lens L2 is convex in a paraxial region, and an image side surface of the second lens L2 is concave in the paraxial region, and the second lens L2 has a refractive power.

The focal length of the whole camera optical lens 10 is defined as f, a focal length of the second lens L2 is defined as f2, and the camera optical lens 10 further satisfies the following condition: −18.04≤f2/f≤129.82. It is beneficial for correcting aberration of an optical system by controlling a refractive power of the second lens L2 within a reasonable range. Preferably, the camera optical lens 10 further satisfies the following condition: −11.27≤f2/f≤103.85.

A curvature radius of the object side surface of the second lens L2 is defined as R3, a curvature radius of the image side surface of the second lens L2 is defined as R4, and the camera optical lens 10 further satisfies the following condition: −1246.96≤(R3+R4)/(R3−R4)≤89.24, which specifies a shape of the second lens L2. When the value is with this range, a development towards ultra-thin and wide-angle lenses would facilitate solving problems, like correcting on-axis chromatic aberration. Preferably, the camera optical lens 10 further satisfies the following condition: −779.35≤(R3+R4)/(R3−R4)≤71.39.

An on-axis thickness of the second lens L2 is d3, a total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.02≤d3/TTL≤0.08. When the above condition is satisfied, it is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.03≤d3/TTL≤0.06.

In this embodiment, an image side surface of the third lens L3 is concave in a paraxial region.

The focal length of the whole camera optical lens 10 is defined as f, the focal length of the third lens L3 is defined as f3, and the camera optical lens 10 further satisfies the following condition: −7.25≤f3/f≤−1.33. The system obtains better imaging quality and lower sensitivity by reasonable distribution of refractive power. Preferably, the camera optical lens 10 further satisfies the following condition: −4.53≤f3/f≤−1.67.

A curvature radius of an object side surface of the third lens L3 is defined as R5, a curvature radius of the image side surface of the third lens L3 is defined as R6, and the camera optical lens 10 further satisfies the following condition: 0.34≤(R5+R6)/(R5−R6)≤2.77, which may effectively control the shape of the third lens L3 and thus is beneficial for the shaping of the third lens L3 as well as avoiding bad shaping and stress generation due to extra-large surface curvature of the third lens L3. Preferably, the camera optical lens 10 further satisfies the following condition: 0.54≤(R5+R6)/(R5−R6)≤2.22.

An on-axis thickness of the third lens L3 is defined as d5, the total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.02≤d5/TTL≤0.08. In this way, it is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.03≤d5/TTL≤0.06.

In this embodiment, an object side surface of the fourth lens L4 is convex in a paraxial region and an image side surface of the fourth lens L4 is convex in the paraxial region, and the fourth lens L4 has a positive refractive power.

The focal length of the whole camera optical lens 10 is defined as f, the focal length of the fourth lens L4 is defined as f4, and the camera optical lens 10 further satisfies the following condition: 0.91≤f4/f≤3.30. The system has better imaging quality and lower sensitivity by the reasonable distribution of refractive power. Preferably, the camera optical lens 10 further satisfies the following condition: 1.46≤f4/f≤2.64.

A curvature radius of the object side surface of the fourth lens L4 is defined as R7, a curvature radius of an image side surface of the fourth lens L4 is defined as R8, and the camera optical lens 10 further satisfies the following condition: −0.96≤(R7+R8)/(R7−R8)≤0.20, which specify a shape of the fourth lens L4. When the value is with this range, a development towards ultra-thin and wide-angle lenses would facilitate solving problems, like correcting aberration of the off-axis picture angle. Preferably, the camera optical lens 10 further satisfies the following condition: −0.60≤(R7+R8)/(R7−R8)≤0.16.

An on-axis thickness of the fourth lens L4 satisfies is defined as d7, the total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.04≤d7/TTL≤0.14. In this way, it is beneficial for the realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.06≤d7/TTL≤0.11.

In this embodiment, an object side surface of the fifth lens L5 is convex in a paraxial region, an image side surface of the fifth lens L5 is concave in the paraxial region, and the fifth lens L5 has a negative refractive power.

The focal length of the whole camera optical lens 10 is defined as f, a focal length of the fifth lens L5 is defined as f5, and the camera optical lens 10 further satisfies the following condition: −4.50≤f5/f≤−1.43. This definition for the fifth lens L5 may effectively flatten a light angle of the camera lens and reduce tolerance sensitivity. Preferably, the camera optical lens 10 further satisfies the following condition: −2.81≤f5/f≤−1.79.

A curvature radius of the object side surface of the fifth lens L5 is defined as R9, a curvature radius of the image side surface of the fifth lens L5 is defined as R10, and the camera optical lens 10 further satisfies the following condition: 1.73≤(R9+R10)/(R9−R10)≤7.36, which specifies the shape of the fifth lens L5. When the value is with this range, a development towards ultra-thin and wide-angle lenses would facilitate solving a problem like chromatic aberration of the off-axis picture angle. Preferably, the camera optical lens 10 further satisfies the following condition: 2.77≤(R9+R10)/(R9−R10)≤5.89.

An on-axis thickness of the fifth lens L5 is defined as d9, the total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.02≤d9/TTL≤0.08. In this way, it is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.04≤d9/TTL≤0.06.

In this embodiment, an object side surface of the sixth lens L6 is convex in a paraxial region, an image side surface of the sixth lens L6 is concave in the paraxial region, and the sixth lens L6 has a positive refractive power.

The focal length of the whole camera optical lens 10 is defined as f, a focal length of the sixth lens L6 is defined as f6, and the camera optical lens 10 further satisfies the following condition: 0.64≤f6/f≤2.85. In this way, the system has better imaging quality and lower sensitivity by appropriate distribution of refractive power. Preferably, the camera optical lens 10 further satisfies the following condition: 1.02≤f6/f≤2.28.

A curvature radius of the object side surface of the sixth lens L6 is defined as R11, a curvature radius of the image side surface of the sixth lens L6 is defined as R12, and the camera optical lens 10 further satisfies the following condition: −8.15≤(R11+R12)/(R11−R12)≤−1.46, which specifies the shape of the sixth lens L6. When the value is with this range, a development towards ultra-thin and wide-angle lenses would facilitate correcting the problem of an off-axis chromatic aberration. Preferably, the camera optical lens 10 further satisfies the following condition: −5.09≤(R11+R12)/(R11−R12)≤−1.82.

An on-axis thickness of the sixth lens L6 is defined as d11, the total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.03≤d11/TTL≤0.12. In this way, it is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.05≤d11/TTL≤0.10.

In this embodiment, the object side surface of the seventh lens L7 is convex in a paraxial region, the image side surface of the seventh lens L7 is concave in the paraxial region, and the seventh lens L7 has a negative refractive power.

The focal length of the whole camera optical lens 10 is defined as f, a focal length of the seventh lens L7 is defined as f7, and the camera optical lens 10 further satisfies the following condition: −14.88≤f7/f≤−0.85. In this way, the system has better imaging quality and lower sensitivity by appropriate distribution of refractive power. Preferably, the camera optical lens 10 further satisfies the following condition: −9.30≤f7/f≤−1.06.

An on-axis thickness of the seventh lens L7 is defined as d13, the total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis is defined as TTL, and the camera optical lens 10 further satisfies the following condition: 0.06≤d13/TTL≤0.19. In this way, it is beneficial for realization of ultra-thin lenses. Preferably, the camera optical lens 10 further satisfies the following condition: 0.09≤d13/TTL≤0.15.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.97 mm, which is beneficial for realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.65 mm.

In this embodiment, an F number of the aperture of the camera optical lens 10 is less than or equal to 1.60. The bigger aperture would provide a better imaging performance. Preferably, the F number of the camera optical lens 10 is less than or equal to 1.57.

With such design, the total optical length TTL of the whole camera optical lens 10 may be made as short as possible, thus the miniaturization characteristics is maintained.

In the following, an example will be taken to describe the camera optical lens 10 of the present disclosure. The symbols recorded in each example are as follows. The unit of the focal length, the on-axis distance, the curvature radius, the on-axis thickness, a inflexion point position and an arrest point position is mm.

TTL: Optical length (the total optical length from the object side surface of the first lens to the image surface of the camera optical lens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on the object side surface and/or image side surface of the lens, so as to satisfy the demand for the high quality imaging. The description below can be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 of the present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0= −0.572 R1 2.210 d1= 0.851 nd1 1.5462 ν1 55.82 R2 4.352 d2= 0.040 R3 2.903 d3= 0.313 nd2 1.6667 ν2 20.53 R4 2.807 d4= 0.549 R5 27.446 d5= 0.302 nd3 1.6667 ν3 20.53 R6 8.180 d6= 0.068 R7 14.609 d7= 0.583 nd4 1.7198 ν4 55.18 R8 −11.164 d8= 0.555 R9 5.123 d9= 0.319 nd5 1.6407 ν5 23.82 R10 2.827 d10= 0.089 R11 2.215 d11= 0.424 nd6 1.5462 ν6 55.82 R12 5.961 d12= 0.280 R13 3.416 d13= 0.800 nd7 1.7294 ν7 38.19 R14 1.750 d14= 0.535 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16= 0.307

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radius for a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of the object side surface of the seventh lens L7;

R14: curvature radius of the image side surface of the seventh lens L7

R15: curvature radius of an object side surface of the optical filter GF;

R16: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;

d13: on-axis thickness of the seventh lens L7;

d14: on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF

d15: on-axis thickness of the optical filter GF;

d16: on-axis distance from the image side surface of the optical filter GF to the image surface;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

nd7: refractive index of d line of the seventh lens L7;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 in Embodiment 1 of the present disclosure.

TABLE 2 Conic Coefficient Aspherical Surface Coefficients k A4 A6 A8 A10 A12 A14 A16 R1  4.4206E−01 −4.6111E−03 −2.4856E−03  −1.0083E−03 8.4267E−04 −7.1235E−04  1.9224E−04 −3.9774E−05 R2 −5.5487E+01 −4.8420E−02 3.7413E−02 −1.8271E−02 5.6358E−03 −1.4922E−03  3.0615E−04 −3.3631E−05 R3  9.2440E−01 −1.1158E−01 6.5777E−02 −2.9826E−02 1.2027E−02 −4.5334E−03  1.3462E−03 −1.4660E−04 R4  2.8258E+00 −1.6303E−02 −3.6951E−02   7.5404E−02 −9.7185E−02   7.4274E−02 −3.1663E−02  5.6253E−03 R5  4.0603E+02 −5.0109E−02 6.5791E−02 −1.6142E−01 1.7891E−01 −1.1580E−01  3.8560E−02 −4.7758E−03 R6 −1.4638E+02 −4.8291E−02 1.0376E−01 −1.9686E−01 1.8162E−01 −9.9620E−02  3.1685E−02 −4.2649E−03 R7 −2.7541E+02 −6.2401E−02 9.3396E−02 −1.1300E−01 6.7566E−02 −1.8804E−02  2.2581E−03 −7.3169E−05 R8 −2.1513E+01 −6.0819E−02 3.7920E−02 −3.1319E−02 1.1235E−02  7.5572E−04 −1.5105E−03  2.7808E−04 R9 −2.0838E+02 −7.9060E−03 −1.2670E−02   3.9225E−02 −4.2034E−02   1.8808E−02 −3.9176E−03  3.1386E−04 R10 −3.5121E+01 −1.0901E−01 5.5424E−02  1.5171E−02 −3.2568E−02   1.4378E−02 −2.6897E−03  1.8719E−04 R11 −1.1441E+01  2.6583E−02 −1.0605E−01   9.0068E−02 −4.1285E−02   9.8136E−03 −1.1580E−03  5.5154E−05 R12 −2.5838E+02  7.9837E−02 −1.2736E−01   7.5804E−02 −2.5291E−02   4.7339E−03 −4.5794E−04  1.7799E−05 R13 −4.6932E+01 −1.5216E−01 4.7212E−02 −4.9755E−03 −1.7989E−04   8.6602E−05 −7.0842E−06  1.8895E−07 R14 −7.6190E+00 −8.6215E−02 3.4868E−02 −8.2801E−03 1.1679E−03 −9.6836E−05  4.3853E−06 −8.4198E−08

Among them, K is a conic index, A4, A6, A8, A10, A12, A14 and A16 are aspheric surface indexes.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above formula (1). However, the present disclosure is not limited to the aspherical polynomials form shown in the formula (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in Embodiment 1 of the present disclosure. In which, P1R1 and P1R2 represent respectively the object side surface and the image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and the image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and the image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and the image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and the image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and the image side surface of the sixth lens L6; and P7R1 and P7R2 represent respectively the object side surface and the image side surface of the seventh lens L7. The data in the column named “inflexion point position” refers to vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” refers to the vertical distances from the arrest points arranged on each lens surface to the optical axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion point inflexion points position 1 position 2 position 3 P1R1 1 1.435 0 0 P1R2 1 0.535 0 0 P2R1 0 0 0 0 P2R2 0 0 0 0 P3R1 2 0.285 1.265 0 P3R2 2 0.485 1.225 0 P4R1 2 0.335 1.185 0 P4R2 1 1.545 0 0 P5R1 2 0.575 1.885 0 P5R2 2 0.405 2.005 0 P6R1 2 0.675 1.925 0 P6R2 2 0.655 1.975 0 P7R1 3 0.325 1.515 2.635 P7R2 1 0.595 0 0

TABLE 4 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 0 0 P1R2 1 1.275 0 P2R1 0 0 0 P2R2 0 0 0 P3R1 1 0.495 0 P3R2 2 0.805 1.405 P4R1 2 0.655 1.395 P4R2 0 0 0 P5R1 1 1.095 0 P5R2 1 0.935 0 P6R1 1 1.245 0 P6R2 2 1.045 2.475 P7R1 1 0.605 0 P7R2 1 1.535 0

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates the field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 10 according to Embodiment 1. In FIG. 4, a field curvature S is a field curvature in the sagittal direction, T is a field curvature in a tangential direction.

Table 13 shows various values of Embodiments 1, 2, 3 and values corresponding to parameters which are already specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the various conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 3.130 mm, an image height of 1.0H is 4.00 mm, a FOV (field of view) in a diagonal direction is 77.87°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

The first lens L1 is made of glass material, the second lens L2 is made of glass material, the third lens is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material, the seventh lens is made of plastic material.

Table 5 and table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.588 R1 2.156 d1= 0.929 nd1 1.5462 ν1 55.82 R2 4.549 d2= 0.043 R3 3.009 d3= 0.254 nd2 1.6667 ν2 20.53 R4 3.018 d4= 0.529 R5 −148.808 d5= 0.265 nd3 1.6667 ν3 20.53 R6 7.318 d6= 0.068 R7 15.557 d7= 0.580 nd4 1.8592 ν4 40.65 R8 −22.935 d8= 0.495 R9 3.724 d9= 0.322 nd5 1.6407 ν5 23.82 R10 2.341 d10= 0.098 R11 2.167 d11= 0.485 nd6 1.5462 ν6 55.82 R12 4.506 d12= 0.215 R13 2.647 d13= 0.793 nd7 1.7997 ν7 39.66 R14 1.891 d14= 0.535 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16= 0.514

Table 6 shows aspherical surface data of each lens of the camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic Coefficient Aspheric Surface Indexes k A4 A6 A8 A10 A12 A14 A16 R1  4.2824E−01 −4.1096E−03 −4.1564E−03   4.6301E−05 6.5445E−04 −7.5835E−04  1.7462E−04 −3.2690E−05  R2 −5.9268E+01 −4.8027E−02 3.7659E−02 −1.8547E−02 5.5274E−03 −1.4487E−03  3.2671E−04 −3.5541E−05  R3  2.0717E+00 −1.2063E−01 7.1419E−02 −3.0154E−02 7.7597E−03 −3.4177E−04 −5.3395E−04 2.2062E−04 R4  3.4957E+00 −2.5314E−02 −2.4126E−02   6.0754E−02 −8.4725E−02   6.7209E−02 −2.9356E−02 5.3148E−03 R5  4.4196E+02 −5.3571E−02 6.6396E−02 −1.5914E−01 1.7647E−01 −1.1485E−01  4.0005E−02 −5.4358E−03  R6 −3.7396E+02 −4.2823E−02 1.0666E−01 −2.0335E−01 1.8617E−01 −9.8700E−02  3.0826E−02 −4.1797E−03  R7 −4.3666E+02 −6.4170E−02 9.6102E−02 −1.1049E−01 6.6952E−02 −1.9161E−02  2.2677E−03 −3.4810E−05  R8 −1.8827E+02 −5.9097E−02 3.9529E−02 −3.0953E−02 1.1216E−02  7.2674E−04 −1.4888E−03 2.7873E−04 R9 −1.4967E+02 −3.8955E−03 −1.3251E−02   3.9226E−02 −4.2019E−02   1.8814E−02 −3.9150E−03 3.1482E−04 R10 −2.3802E+01 −1.0856E−01 5.5760E−02  1.5203E−02 −3.2569E−02   1.4377E−02 −2.6897E−03 1.8727E−04 R11 −8.1352E+00  2.9353E−02 −1.0526E−01   9.0067E−02 −4.1298E−02   9.8099E−03 −1.1585E−03 5.5161E−05 R12 −2.1039E+02  7.9131E−02 −1.2742E−01   7.5807E−02 −2.5289E−02   4.7342E−03 −4.5793E−04 1.7788E−05 R13 −2.4498E+01 −1.5249E−01 4.7246E−02 −4.9693E−03 −1.8047E−04   8.6322E−05 −7.0931E−06 1.9312E−07 R14 −9.0859E+00 −8.6267E−02 3.4904E−02 −8.2777E−03 1.1680E−03 −9.6833E−05  4.3842E−06 −8.4455E−08 

Table 7 and table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7 Number of Number of inflexion Inflexion point Inflexion point inflexion points position 1 position 2 points 3 P1R1 1 1.445 0 0 P1R2 1 0.535 0 0 P2R1 0 0 0 0 P2R2 0 0 0 0 P3R1 0 0 0 0 P3R2 2 0.435 1.145 0 P4R1 2 0.305 1.125 0 P4R2 1 1.445 0 0 P5R1 2 0.705 1.835 0 P5R2 2 0.435 1.995 0 P6R1 2 0.735 1.945 0 P6R2 2 0.645 1.975 0 P7R1 3 0.365 1.515 2.645 P7R2 1 0.565 0 0

TABLE 8 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 0 0 P1R2 1 1.255 0 P2R1 0 0 0 P2R2 0 0 0 P3R1 0 0 0 P3R2 2 0.785 1.295 P4R1 2 0.605 1.325 P4R2 0 0 0 P5R1 1 1.165 0 P5R2 2 1.085 2.115 P6R1 1 1.335 0 P6R2 2 1.055 2.475 P7R1 1 0.695 0 P7R2 1 1.395 0

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 555 nm after passing the camera optical lens 20 according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 3.204 mm. An image height is 4.00 mm, and the FOV in the diagonal direction is 64.86°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

The first lens L1 is made of glass material, the second lens L2 is made of plastic material, the third lens is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material, the seventh lens is made of plastic material.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.603 R1 2.078 d1= 0.992 nd1 1.5462 ν1 55.82 R2 5.719 d2= 0.056 R3 3.838 d3= 0.223 nd2 1.6667 ν2 20.53 R4 3.320 d4= 0.476 R5 −41.143 d5= 0.331 nd3 1.6667 ν3 20.53 R6 7.865 d6= 0.062 R7 15.372 d7= 0.501 nd4 2.0499 ν4 39.46 R8 −43.648 d8= 0.535 R9 3.281 d9= 0.285 nd5 1.6407 ν5 23.82 R10 2.170 d10= 0.080 R11 2.269 d11= 0.514 nd6 1.5462 ν6 55.82 R12 3.745 d12= 0.186 R13 2.502 d13= 0.723 nd7 2.0495 ν7 41.39 R14 2.001 d14= 0.535 R15 ∞ d15= 0.210 ndg 1.5168 νg 64.17 R16 ∞ d16= 0.560

Table 10 shows aspherical surface data of each lens of the camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic Coefficient Aspheric Surface Indexes k A4 A6 A8 A10 A12 A14 A16 R1  3.2525E−01 −3.7782E−03 −4.1412E−03  −1.2558E−04 8.2577E−04 −7.9605E−04  1.3543E−04 −2.4254E−05  R2 −5.6310E+01 −5.3840E−02 4.0248E−02 −1.8544E−02 5.0695E−03 −1.4733E−03  4.2732E−04 −5.7494E−05  R3  5.1415E+00 −1.1208E−01 7.3895E−02 −3.1220E−02 7.7249E−03 −1.8247E−04 −6.0566E−04 2.1926E−04 R4  4.3041E+00 −2.4250E−02 −1.5043E−02   6.2060E−02 −8.5110E−02   6.6493E−02 −2.9581E−02 5.6856E−03 R5 −1.5189E+02 −4.5586E−02 7.3995E−02 −1.6122E−01 1.7276E−01 −1.1437E−01  4.1487E−02 −6.0295E−03  R6 −1.1912E+03 −3.7592E−02 1.0790E−01 −2.0291E−01 1.8581E−01 −9.9324E−02  3.0616E−02 −3.9556E−03  R7 −5.5728E+02 −6.4180E−02 9.7137E−02 −1.0956E−01 6.7073E−02 −1.9511E−02  2.1709E−03 2.0004E−05 R8 −5.3996E+02 −5.4031E−02 4.0193E−02 −3.0672E−02 1.1329E−02  7.5661E−04 −1.4990E−03 2.6810E−04 R9 −2.0184E+02 −2.5169E−03 −1.2921E−02   3.9247E−02 −4.2038E−02   1.8806E−02 −3.9166E−03 3.1516E−04 R10 −2.3116E+01 −1.0869E−01 5.5954E−02  1.5262E−02 −3.2562E−02   1.4378E−02 −2.6899E−03 1.8699E−04 R11 −7.2967E+00  3.2220E−02 −1.0482E−01   9.0094E−02 −4.1308E−02   9.8066E−03 −1.1591E−03 5.5151E−05 R12 −2.7291E+02  7.7436E−02 −1.2743E−01   7.5823E−02 −2.5286E−02   4.7345E−03 −4.5793E−04 1.7775E−05 R13 −2.1667E+01 −1.5341E−01 4.7203E−02 −4.9689E−03 −1.8014E−04   8.6365E−05 −7.0808E−06 1.9110E−07 R14 −1.3100E+01 −8.6465E−02 3.4953E−02 −8.2741E−03 1.1681E−03 −9.6842E−05  4.3827E−06 −8.4649E−08 

Table 11 and table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11 Number of Number of inflexion Inflexion point Inflexion point inflexion points position 1 position 2 points 3 P1R1 1 1.425 0 0 P1R2 1 0.515 0 0 P2R1 0 0 0 0 P2R2 0 0 0 0 P3R1 0 0 0 0 P3R2 2 0.335 1.155 0 P4R1 2 0.305 1.105 0 P4R2 1 1.375 0 0 P5R1 2 0.745 1.845 0 P5R2 2 0.435 2.015 0 P6R1 2 0.775 1.975 0 P6R2 2 0.625 1.975 0 P7R1 3 0.375 1.525 2.605 P7R2 1 0.515 0 0

TABLE 12 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 0 0 P1R2 1 1.155 0 P2R1 0 0 0 P2R2 0 0 0 P3R1 0 0 0 P3R2 2 0.745 1.295 P4R1 2 0.595 1.315 P4R2 0 0 0 P5R1 1 1.165 0 P5R2 2 1.105 2.125 P6R1 1 1.385 0 P6R2 2 1.025 2.495 P7R1 1 0.715 0 P7R2 1 1.195 0

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 555 nm after passing the camera optical lens 30 according to Embodiment 3.

The following Table 13 shows the values corresponding to the conditions in this embodiment according to the above conditions. Obviously, this embodiment satisfies the various conditions.

In this embodiment, a pupil entering diameter of the camera optical lens is 3.186 mm, an image height is 4.00 mm, and a FOV in the diagonal direction is 76.97°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment 3 f 4.852 4.966 4.938 f1 7.211 6.597 5.453 f2 419.921 122.325 −44.532 f3 −17.588 −10.454 −9.876 f4 8.875 10.865 10.875 f5 −10.409 −10.821 −11.115 f6 6.207 7.124 9.387 f7 −6.165 −15.487 −36.731 f12 6.807 6.114 5.886 FNO 1.55 1.55 1.55 f1/f 1.49 1.33 1.10 n4 1.72 1.86 2.05 f3/f4 −1.98 −0.96 −0.91 (R13 + R14)/ 3.10 6.00 8.99 (R13 − R14) n7 1.73 1.80 2.05

It can be appreciated by one having ordinary skill in the art that the description above is only embodiments of the present disclosure. In practice, one having ordinary skill in the art can make various modifications to these embodiments in forms and details without departing from the spirit and scope of the present disclosure. 

What is claimed is:
 1. A camera optical lens, comprising, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; wherein, the camera optical lens satisfies following conditions: 1.00≤f1/f≤1.50; 1.70≤n4≤2.20; −2.00≤f3/f4≤2.00; 0.50≤(R13+R14)/(R13−R14)≤10.00; and 1.70≤n7≤2.20, where, f denotes a focus length of the camera optical lens; f1 denotes a focus length of the first lens; f3 denotes a focus length of the third lens; f4 denotes a focus length of the fourth lens; n4 denotes a refractive index of the fourth lens; n7 denotes a refractive index of the seventh lens; R13 denotes a curvature radius of an object side surface of the seventh lens; and R14 denotes a curvature radius of an image side surface of the seventh lens.
 2. The camera optical lens according to claim 1 further satisfying following conditions: 1.05≤f1/f≤1.49; 1.71≤n4≤2.12; −1.99≤f3/f4≤0.55; 1.80≤(R13+R14)/(R13−R14)≤9.50; and 1.71≤n7≤2.12.
 3. The camera optical lens according to claim 1, wherein the first lens has a positive refractive power, an object side surface of the first lens is convex in a paraxial region, and an image side surface of the first lens is concave in the paraxial region, wherein, the camera optical lens satisfies following conditions: −6.13≤(R1+R2)/(R1−R2)≤−1.43; and 0.07≤d1/TTL≤0.24, where, R1 denotes a curvature radius of the object side surface of the first lens; R2 denotes a curvature radius of the image side surface of the first lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 4. The camera optical lens according to claim 3 further satisfying following conditions: −3.83≤(R1+R2)/(R1−R2)≤−1.78; and 0.11≤d1/TTL≤0.19.
 5. The camera optical lens according to claim 3, wherein, the second lens has a refractive power, an object side surface of the second lens is convex in a paraxial region, and an image side surface of the second lens is concave in the paraxial region; wherein, the camera optical lens satisfies following conditions: −18.04≤f2/f≤129.82; −1246.96≤(R3+R4)/(R3−R4)≤89.24; and 0.02≤d3/TTL≤0.08, where, f2 denotes a focus length of the second lens; R3 denotes a curvature radius of the object side surface of the second lens; R4 denotes a curvature radius of the image side surface of the second lens; d3 denotes an on-axis thickness of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 6. The camera optical lens according to claim 5 further satisfying following conditions: −11.27≤f2/f≤103.85; −779.35≤(R3+R4)/(R3−R4)≤71.39; and 0.03≤d3/TTL≤0.06.
 7. The camera optical lens according to claim 1, wherein, the third lens has a negative refractive power, and an image side surface of the third lens is concave in a paraxial region; wherein, the camera optical lens satisfies following conditions: −7.25≤f3/f≤−1.33; 0.34≤(R5+R6)/(R5−R6)≤2.77; and 0.02≤d5/TTL≤0.08, where, R5 denotes a curvature radius of an object side surface of the third lens; R6 denotes a curvature radius of the image side surface of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 8. The camera optical lens according to claim 7 further satisfying following conditions: −4.53≤f3/f≤−1.67; 0.54≤(R5+R6)/(R5−R6)≤2.22; and 0.03≤d5/TTL≤0.06.
 9. The camera optical lens according to claim 1, wherein the fourth lens has a positive refractive power, an object side surface of the fourth lens is convex in a paraxial region, and an image side surface of the fourth lens is convex in the paraxial region, wherein, the camera optical lens satisfies following conditions: 0.91≤f4/f≤3.30; −0.96≤(R7+R8)/(R7−R8)≤0.20; and 0.04≤d7/TTL≤0.14 where, R7 denotes a curvature radius of the object side surface of the fourth lens; R8 denotes a curvature radius of the image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 10. The camera optical lens according to claim 9 further satisfying following conditions: 1.46≤f4/f≤2.64; −0.60≤(R7+R8)/(R7−R8)≤0.16; and 0.06≤d7/TTL≤0.11.
 11. The camera optical lens according to claim 1, wherein, the fifth lens has a negative refractive power, an object side surface of the fifth lens is convex in a paraxial region and an image side surface of the fifth lens is concave in the paraxial region, wherein, the camera optical lens satisfies following conditions: −4.50≤f5/f≤−1.43; 1.73≤(R9+R10)/(R9−R10)≤7.36; and 0.02≤d9/TTL≤0.08, where, f5 denotes a focus length of the fifth lens; R9 denotes a curvature radius of the object side surface of the fifth lens; R10 denotes a curvature radius of the image side surface of the fifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 12. The camera optical lens according to claim 11 further satisfying following conditions: −2.81≤f5/f≤−1.79; 2.77≤(R9+R10)/(R9−R10)≤5.89; and 0.04≤d9/TTL≤0.06.
 13. The camera optical lens according to claim 1, wherein, the sixth lens has a positive refractive power, an object side surface of the six lens is convex in a paraxial region, and an image side surface of the six lens is concave in the paraxial region, wherein, the camera optical lens satisfies following conditions: 0.64≤f6/f≤2.85; −8.15≤(R11+R12)/(R11−R12)≤−1.46; and 0.03≤d11/TTL≤0.12, where, f6 denotes a focus length of the sixth lens; R11 denotes a curvature radius of the object side surface of the sixth lens; R12 denotes a curvature radius of the image side surface of the sixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 14. The camera optical lens according to claim 13 further satisfying following conditions: 1.02≤f6/f≤2.28; −5.09≤(R11+R12)/(R11−R12)≤−1.82; and 0.05≤d11/TTL≤0.10.
 15. The camera optical lens according to claim 1, wherein the seventh lens has a negative refractive power, the object side surface of the seventh lens is convex in a paraxial region, and the image side surface of the seventh lens is concave in the paraxial region; wherein, the camera optical lens satisfies following conditions: −14.88≤f7/f≤−0.85; and 0.06≤d13/TTL≤0.19, where, f7 denotes a focus length of the seventh lens; d13 denotes an on-axis thickness of the seventh lens; and TTL denotes a total optical length from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis.
 16. The camera optical lens according to claim 15 further satisfying following conditions: −9.30≤f7/f≤−1.06; and 0.09≤d13/TTL≤0.15.
 17. The camera optical lens according to claim 1, wherein a total optical length TTL from an object side surface of the first lens to an image surface of the camera optical lens along an optical axis is less than or equal to 6.97 mm.
 18. The camera optical lens according to claim 17, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.65 mm.
 19. The camera optical lens according to claim 1, wherein an F number of the camera optical lens is less than or equal to 1.60.
 20. The camera optical lens according to claim 19, wherein the F number of the camera optical lens is less than or equal to 1.57. 